/Engine/Plugins/Runtime/MeshModelingToolset/Source/ModelingComponents/Public/ToolSceneQueriesUtil.h
Test if two points are close enough to snap together. This is done by computing visual angle between points for current camera position.
namespace ToolSceneQueriesUtil { bool ToolSceneQueriesUtil::PointSnapQuery ( const [FViewCameraState](API\Runtime\InteractiveToolsFramework\FViewCameraState) & CameraState, const FVector3d & Point1, const FVector3d & Point2, double VisualAngleThreshold ) }